Weather cover for bicycle handlebar lock



FIG. 1 is a top plan view of a weather cover for bicycle handlebar lock showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a bottom plan view;

FIG. 4 is a left side elevation view thereof; and

FIG. 5 is a perspective view thereof. 

The ornamental design for a weather cover of bicycle handlebar lock, as shown. 